Carlton's Mitch Robinson says he's learned a harsh lesson about professionalism after the AFL player was caught on video in a brawl at a weekend music festival.

The Blues have ordered Robinson to donate $1000 to the Salvation Army and spend two months doing community service with Melbourne's homeless and under-privileged after he was filmed in a fight at Melbourne's Big Day Out on Saturday.

Robinson left the festival and informed the club immediately of the incident.

But video footage appeared of the ugly brawl - in which the Blues said he had become involved to prevent a friend's anti-social behaviour.

"Obviously you've got to think your way out of (bad situations) a lot better than I did on the weekend," he told media in Melbourne on Tuesday.

"I'll learn from that. I just want to focus on my footy and get back to training and get the respect back from the club and the boys."

Robinson, who avoided any suspension from the club, is the second Carlton player to find himself in off-season trouble.

Last year's best and fairest winner Heath Scotland was last week suspended for the Blues' first two matches of the home and away season against Richmond and Collingwood after pleading guilty to assault last year.

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